Update Antora refname for future versions.

Ensure that future branches and tags are selected for inclusion in the released documentation. ALso add latest-version-extesion to ensure only the latest generation (major.minor) is built to prevent building all tags.

See #2893.

Author: rwinch

Diff for: antora-playbook.yml

@@ -1,6 +1,7 @@
 antora:
   extensions:
   - '@springio/antora-extensions/partial-build-extension'
+  - require: '@springio/antora-extensions/latest-version-extension'
   - require: '@springio/antora-extensions/inject-collector-cache-config-extension'
   - '@antora/collector-extension'
   - '@antora/atlas-extension'
@@ -15,7 +16,10 @@ git:
 content:
   sources:
   - url: https://github.com/spring-projects/spring-data-commons
-    branches: [main]
+    # Refname matching:
+    # https://docs.antora.org/antora/latest/playbook/content-refname-matching/
+    branches: [main,'({3..9}).+({0..9}).x', '!(3.{0..1}.x)']
+    tags: ['({3..9}).+({0..9}).+({0..9})?(-{RC,M}+({0..9}))', '!(3.{0..1}.+({0..9})?(-{RC,M}+({0..9})))','!(3.2.0-M1)']
     start_path: src/main/antora
 asciidoc:
   attributes: